US1442661A - Taper attachment for lathes - Google Patents

Description

Jan. 16, 1923. 1,442,661. w. F. GROENE.

TAPER ATTACHMENT FOR LATHES.

FILED JUNE 8, 1921.. 3 SHEETS--SHEEY l.

Jan. 16, 1923.

1,442,661. w. F. GRUENE.

TAPER ATTACHMENT FOR LATHES. FILED JUNE 8,1921.

3 SHEETS-SHEET 2 BSHEETS-SHEET 3.

W. F. GROENE. TAPER ATTACHMENT FOR LATHE& FILED JUNE 8. 1921 Jan.16,1923.

Patented dan. l5, 19232.

p tirati WILLIAM IE. GROENE, OF CINCINNATI, OHIO, ASSIGNOR TO THE R. K'. LE BLDND MACHINE TOOL COMPANY, OF CINCINNATI, OHIO, A CCRPORATION OF DELA- WARE.

TAPER ATTACHMENT FOR LATHES.

Application led June 8,

To all whom it may concern Be it known that I, VILLIAM F. GROENE, a citizen olf the United States, residing at Cincinnati, county ot Hamilton, and State of Ohio, have invented an Improvement in Taper Attachments for Lathes, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to taper attachment 'for lathes whereby, as the lathe tool is moved longitudinally of the lathe, it will also be moved transversely ct the lathe Aat a speed bearing a predetermined relation to the movement longitudinally of the lathe.

Two types of taper attachments for lathes are now well known; in one type the taper guide rail is supported by the lathe carriage, and in the other type the taper guide rail is supported from the lathebed by means otl a bed bracket. The present invention relates more particularly to the latter type, although various features of the present invention are well adapted for either type of taper attachment.

In taper attachments for lathes, it is customary to provide a taper guide rail having a sliding shoe which is caused to slide along the taper rail during the use of the taper attachment, but the shoe usually fits tightly upon the taper rail to prevent play from occurring therebetween, and as a result, considerable torce is often required to move the.

shoe along the rail, particularly if the parts are not well lubricated.

An important feature of the present invention therefore, consists in a taper attachment of the type above indicated which is so constructed that the cross feed screw is entirely relieved from lateral bending forces, and from longitudinal stresses throughout the use of the taper mechanism.

Another feature ot the invention consists in so constructing the taper attachment that the cutting tool may be easily and quickly placed under its control, and released therefrom.

The above and other novel features of the invention will appear more fully from the following description and the drawings.

The accompanying drawingsvillustrate a good, practical form of the invention, the

1921. Serial No. 476,037.

details of which may be modified within the true scope thereof, as defined by rthe claims.

ln the drawings Figure 1 is a vertical. transverse sectional view taken through the lathe bed and its carriage.

Fig. 2 is an enlarged plan view of the taper attachment and a portion of the carriage, showing the taper attachment in use.

. Fig. 3 is a view similar to Fig. 2 but showing the taper attachment out of operation; and

Fig. 4 is a rear elevation of the parts shown in Fig. 3.

In the drawings, 10 designates the lathe bed having the carriage 11 slidably mounted thereupon; and mounted upon the carriage is the cross-slide 12 which supports the toolcarrying mechanism 13. The construction ot these parts forms no part of the present invention, and they may be ol the usual or any preferred embodiment.

In the present embodiment of the invention, the cross-feed screw 14 is operatively connected to the`cross-slide 12 by suitable means such as a nut 15 secured to the crossslide by a shank 16 and nut 17, and the rear end ot the screw 14 is rotatably secured to a relatively long sleeve 18. In the present instance the rear portion of the screw 14C eX- tends through the sleeve 18 and is journaled therein, thrust bearings 19 and Q0 being provided upon the screw at the ends of the sleeve to prevent relative longitudinal movement between the sleeve and screw.

The sleeve 18 is supported by the lathe carriage 11 tor sliding movement transversely ot the lathe, and to this end, in the embodiment shown, one end portion ot' the sleeve 18 is slidably received in a guide-way 2l while the opposite end portion ot the sleeve is slidably received in a guide-way7 22 of the out-bracket 23. The bracket Q3 inay be given the construction shown (see Fig. 2) and may be rigidly secured to the carriage 11 by suitable means such as bolts Q4. The arrangement just described is such that the sleeve 18 is permitted to slide in the direction of its length, but is strongly supported against displacement relatively to the carriage in a direction transversely to the length ot' the sleeve.

As stated, the present invention relates more particularly to the type of taper attion of the bracket 25 has a 'tace plate 29 upon which the taper rail 80 is pivotally mounted by the pivot pin 31. Upon the taper rail 30 is slidably mounted a shoe 32 adapted to be secured to the sleeve 18 in a manner to be described.

The taper rail 30 is adapted to be adjusted angularly about the pivot pin 3l, and various means may be provided for effecting this adjustment. Thd means shown consists of a threaded bolt 33 having threaded engagement with a downwardly extending bolt or stud 34. The tace plate 29 is provided with a curved slot 35 to clear this bolt and a nut 36 upon the lower end. ot' the bolt serves to clamp the taper rail to the faceplate in the desired position. The adjusting bolt 33 has a shoulder 37 mounted in a socket in the face plate which serves to hold the bolt from moving in thel direction of its length, and this bolt may have a head 38 for rotating the bolt to effect adjustment of the taper rail.

In the embodiment of the invention disclosed, it is desirable co-provide means for securing the sleeve 18 to the sliding shoe 32 during the use or' the taper attachment, and to release the sleeve from the shoe and to secure the sleeve against movement relatively to the carriage during the normal operation o the lathe. This may be satisfactorily accomplished by providing a bolt 39 insertable in a hole 40 within the sleeve and having threaded engagement with a threaded socket 41 in the shoe to operatively connect the sleeve and shoe. Then it is no longer desired t0 use the taper attachment, the bolt 39 isrenioved and is inserted in a hole 42 extending transversely through the out-bracket 23. 1n this position the threaded end ott-he bolt 39 engages a threaded socket 13 in an enlargement fle-1 upon the sleeve 18 and serves firmly to clamp a face 45 of this enlargement against the inner face of the bracket 23.

When the sleeve 18 is secured by the bolt 39 to the shoe, and the carriage 11 is moved along the lathe bed, the shoe will be moved along the taper rail 30 and will impart movementV to the sleeve 18, cross-feed screw 1-1, and through the latter to the crossslide 12 in a direction transversely of the lathe. The connection between the sleeve and shoe serves to slide the shoe along the taper rail, but since the sleeve 18 is strongly supported by the guide-ways 21 and 22, it is well adapted to withstand the lateral forces to which it may be submitted, and the end. of the cross-feed screw within the sleeve is relieved Jfrom all lateral bending forces.

The .forward end 4.6 of the cross feed screw is slidably received in a sleeve- 47 to which it is keyed, and this sleeve may be rotated by a handle 18 to rotate the cross feed screw, in this manner the movement of the screw in a direction of its axis during the use of the taper attachment is taken care of.

1t is desirable to provide means for rigidly connecting the cross-feed slide 12 to the sleeve 18 when the taper attachment is in use and after the screw 14 has been rotated to adjust the cross-slide. To this end, in the embodiment shown, a slotted bar i9 is provided, one end of which is iirmly secured to the cross-slide 12 byl a pin 50 and bolt 51. The slot 52 of the bar is adapted to slidably receive the clamping bolt 53 having threaded engagement withV the sleeve 18. The arrangement is such that the bar 49 may be firmly clamped against the upper 'tace ot the sleeve by tightening the bolt 53 to force the clamp 54C against the upper face oit the bar.

From the foregoing description when read 'in connection with the drawings, it will be seen that the cross-feed screw is relieved :trom all lateral bending forces throughout the use of the' taper attachment, and'that by tightening the clamping nut 53, a rigid connection is formed between the cross-slide and sleeve which relieves the cross-feed screw from longitudinal stresses. 1t will also be apparent' that the taper attachment may be easily and quickly brought into operation, and the parts may again be restored to normal operation simply bv manipulating the bolt 39.

What is claimed is:

1. ln a taper attachment for lathes, the combination of a lathe-bed, a lathe-carriage having a cross-slide mounted thereupon,a bracket upon said carriage and having a guide-way, a taper rail having a bracket to support 1t from the lathe bed, a sliding shoe upon thetaper rail, a sleeve slidably mounted 'in said guide-way, a cross-feed -screw connected to the cross-slide and having an end extending through and journaled in said sleeve, and means for connecting said sleeve to said shoe.

2. 1n a taper attachment for lathes, the combination of a' lathe-bed, a lathe Vcarriage having a cross-slide mounted thereupon, a taper rail having a bracket to support it from the lathe bed in a fixed position, a 'sliding shoe upon the taper rail and adapted to be slid along the rail by movement of the lathe carriage, a long sleeve having one end extending into sliding engagement with the lathe-carriage and the other end slidably supported by a rear bracket upon the lathecarriage, a cross-feed screw connected to the cross slide and having one end journaled in said sleeve, and means for removably securing said sleeve to the shoe. p

3. In a taper attachment for lathes, the combination ot a lathe-bed, a lathe-carriage having a cross-slidemounted thereupon, a taper rail having a bracket to support it from the lathe-bed in a fixed position, a sliding shoe upon the taper rail, a long sleeve having one end extending into sliding engagement with the lathe-carriage and having its other end slidably supported by a bracket upon the lathe carriage, a cross- 'eed screw connected to the cross-slide and having an end journaled in said sleeve, and means to secure said sleeve either to said shoe or in fixed relation to the lathe-carriage.`

4. In a taper attachment for lathes, the combination of a lathe-bed, a lathe-carriage having a cross-slide mounted thereupon, a taper rail having a bracket to support it .from the lathe bed, a sliding shoe upon the taper rail, a rearwardly extending bracket upon the lathe carriage, a slee-ve having sliding engagement with said bracket, ya cross-feed screw connected to the cross-slide and rotatably secured to said sleeve, and means for securing the sleeve either to the sliding shoe or rigidly to said bracket.

5. In a taper attachment for lathes, the combination of a lathe-bed, a lathe-carriage having a cross-slide mounted thereupon, a

taper rail having a bracket to support it from the lathe bed, a sliding shoe upon the taper rail, a rearwardly extending bracket upon the lathe carriage, a Sleeve having sliding engagement with said bracket, a cross-feed screw connected to the cross-slide and having an end journaled in said sleeve, means for securing the sleeve to the sliding shoe, and a bar Jfor rigidly connecting the cross-slide to the sleeve and constructed to be clamped to the sleeve in dilerent positions ot adjustment.

6. In a taper attachment for lathes, the combination of a lathe carriage having a. cross-slide mounted thereupon, a rearwardly extending bracket upon the carriage and having a portion in spaced relation to the rear portion of the carriage, a long sleeve having sliding engagement with the spaced portion of the bracket and the carriage and extending across the space therebetween, a cross-feed screw connected to the cross slide and extending rotatably through said sleeve, a taper rail having a shoe slidably mounted thereupon, and means for securing an intermediate portion of the sleeve to the shoe.

7. In a taper attachment for lathes, the combination of a lathe-bed, a lathe-carriage having a cross-slide mounted thereupon, a taper rail having a bracket to support it 'from the lathe-bed, a slidingshoe upon the taper rail, a long sleeve, means upon the carriage slidably engaging the ends ot the sleeve to support it, a cross-'feed screw eX- tending through the sleeve and journaled therein and connected to the cross-slide, and means for connecting the sleeve to the sliding shoe.

8. In a taper attachment for lathes, the combination of a lathe-bed, a lathe carriage having a cross-slide mounted thereupon, a taper rail having a bracket to support it from the lathe bed, a shoe slidably mounted upon the taper rail, a cross-feed screw connected to the cross-slide, a sleeve having an end of the cross-feed screw journaled therein, means for supporting the sleeve for sliding movement transversely of the lathe including bearings engaging the ends of the sleeve, and means for securing the sleeve to the shoe.

In testimony whereof, I have signed my name to this specification.

VILLIAM F. GROENE.

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